A-72-070
NTSB Safety Recommendation — Aviation
Recommendation text
THE FAA EXPEDITE ITS REEVALUATION OF FAR PART 25.561 REGARDING DESIGN STRENGTH REQUIREMENTS FOR AIRCRAFT SEATS AND OTHER CABIN EQUIPMENT. THE BOARD REGRETS THAT THE FAA DID NOT INCORPORATE THE INCREASED STRENGTH REQUIREMENTS PROPOSED IN NPRM 69-33 INTO THE FEDERAL AVIATION REGULATIONS. THE BOARD IS OF THE OPINION THAT NEW MATERIALS AND DESIGN TECHNIQUES IN THE AEROSPACE INDUSTRY, COMBINED WITH THE KNOWN TOLERANCE LIMITS OF THE HUMAN BODY TO DECELERATIVE FORCES AND THE RECURRING FAILURE OF FURNISHINGS IN AIRCRAFT ACCIDENTS JUSTIFIES AN INCREASE IN THESE STRENGTH VALUES.
In plain language (FlightFinder summary)
The FAA is asked to expedite its reevaluation of FAR Part 25.561, which sets design strength requirements for aircraft seats and other cabin equipment. The justification is that new materials and design techniques, combined with known human tolerance to decelerative forces and recurring failures of furnishings in accidents, support increasing these strength values.
This plain-language summary is written by FlightFinder to explain the recommendation above. It is not the official wording — the verbatim NTSB text is quoted above.
Details
| Status | Closed - Unacceptable Action |
|---|---|
| Mode | Aviation |
| Closed | Jul 26, 1973 |
| NTSB number | DCA70AZ007 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).